Kubernetes

- Make sure PyPI source distribution is complete with all files from the root directory

- Update to Kubernetes 1.8 cluster
- IntOrString is now object thus it can be int or string. 18 359
- Adding stream package to support calls like exec. The old way of calling them is deprecated. See [Troubleshooting](README.mdwhy-execattach-calls-doesnt-work)).
- config.http_proxy_url is deprecated. use configuration.proxy instead.
- Configuration is not a singleton object anymore. Please use Configuration.set_default to change default configuration.
- Configuration class does not support `ws_streaming_protocol` anymore. In ApiClient.set_default_header set `sec-websocket-protocol` to the preferred websocket protocol.

- Fix Operation names for subresources kubernetes/kubernetes49357

- Add proper GCP config loader and refresher kubernetes-client/python-base22
- Add ws_streaming_protocol and use v4 by default kubernetes-client/python-base20
- Respect the KUBECONFIG environment variable if set kubernetes-client/python-base19
- Allow setting maxsize for PoolManager kubernetes-client/python-base18
- Restricting the websocket-client to <=0.40 299

- Update client to kubernetes 1.7
- Support ThirdPartyResources (TPR) and CustomResourceDefinitions (CRD). Note that TPR is deprecated in kubernetes 251 201
- Better dependency management 136
- Add support for python3.6 244

- No changes. The same as `v2.0.0b1`.